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Model Data

Important Notice: 12.27.2016
GDS and Plot|FTP4U Services were retired at the end of February 2017.
Due to lack of developer support we were not be able to continue providing GDS services. The Plot and FTP4U services were also retired.
Important Notice: 12.23.2016
Transition to HTTPS and HSTS.
Following Federal government policy, NOMADS web services were transitioned to use HTTPS and HSTS.
Important Notice: 10.24.2017
Decommissioning of the NCEP Charts application.
The NCEP Charts web application, which was at the URL, is no longer operational. Images that were accessible through that application can be browsed by category in the NCEI TDS NCEP Charts catalog.
Important Notice: 10.24.2017
Decommissioning of the NOMADS TDS.
NCEI plans to decommission the existing NOMADS THREDDS system on or about 1.24.2018. Model data can still be accessed through the NCEI THREDDS server model page. If you have comments on the decommissioning, please contact
A 3-D animated image of downscaled Global Forecast System (GFS) model data

A 3-D animated image of downscaled Global Forecast System (GFS) model data showing Hurricane Katrina making landfall on August 29, 2005. This image was generated with the Visualization and Analysis Platform for Ocean, Atmosphere, and Solar Researchers (VAPOR) tool and ImageMagick.

To address a growing need for remote access to high-volume numerical weather prediction and global climate models and data, NCEI, along with the National Centers for Environmental Prediction (NCEP) and the Geophysical Fluid Dynamics Laboratory (GFDL), initiated the NOAA Operational Model Archive and Distribution System (NOMADS) project. NOMADS is a repository of weather model output datasets, model input datasets (assimilation), and a limited subset of climate model datasets generated by NOAA. NCEI provides near-real-time access to these weather model forecast data in addition to historical model data.

Looking into the past, present, and future, four broad categories of modeled data are available through NOMADS: Reanalysis, Numerical Weather Prediction, Ocean Models, and Climate Prediction. To assist users in the analysis of multi-disciplinary datasets and promote interoperable data analysis, NOMADS also services derived/other model data including paleoclimate (tree ring and ice core) data, observational, and derived observational datasets.